Roller side bearing.



ROLLER SIDE BEARING.

APPLICATION FILED FEB. 16. 1918.

J. F. OCONNOR.

Patented Jan. 7, 1919.

INVENTOR. John/F0 rznor To all whom it may concern:

UNITED STATES, PATENT OFFICE.

roam r. ocomwon, or CHICAGO, 1 L1iwo1s,.Ass1euon TO WILLIAM H. MINER, or

, c mzY, NEW "201m.

ROLLER smr: BEARING.

Be i known that I, JOHN F. UCoNNoR, a citizen of the United States,residm Chicago, in the county of Cook and tate of llllinois, haveinvented a certain new and useful Improvement in .Roller Side Bearings,of which the following is a full, clear, concise, and exact description,reference being had to the accompanying drawmgs', forminga part of thisspecification- This invention relates to improvements in roller sidebearings. v In the operation and construction of railwvay cars, it iscustomary to employ antifriction roller side bearings between the endsof the body and truck bolsters to thereby minimize the friction whenthetrucks swivel with respect to the car body and also to prevent undueswaying of the car body relatively to the trucks. In many instances, ithas been found advisable to render these anti-friction roller sidebearings ad1ustable in such a way as to always insure a true linecontact between the anti-friction rollers and the opposed engagingsurfaces. The general practice to accomplish the last named I object hasbeen to employ a rockalbly mounted cradle to carry the anti-frictionroller so that the anti-friction roller could oscillate or swing. as anentirety about an axis transverse to the axis of rotation of the roller.

One object of my invention is to provide an anti-friction roller sidebearing, which will accomplish the same results as are accomplished bythose structures employing rockably mounted cradlefor carrying theanti-friction roller and which at the same time will avoid the necessityof uslng the cradle or any extramember corresponding thereto.

Another and more specific object of the invention is to provide ananti-friction roller ill") bearing comprises merely the anti-friction tobody and truck side hearing, more particularly adapted for railway carswherein the antl-frictlon roller is adjustable to compensate-forvariations in the angle between the opposed bearing surfaces of the.bolsters and wherein the side Specification of Letters instant.

Patented Jan. 7, 1919.

Application filed February 16, 1918. Serial No. 217,514.

proved side bearing in connection therewith.

, and 11 denotes the under portion of an op posed body bolster, it beingunderstood that the two bolsters are pivotally connected at theircenters in the usual manner.

The improved side'bearing, as shown, comprises a base or retainingcasting A and an anti-friction roller B. I

The base casting A is shown as of hollow, substantially rectangular formwith end walls 1212, side [Walls l3--13 and base flanges 1414 by'whichit is adapted to be riveted to the body bolster. Each of the side walls13 is provided with a hollow lat: erally extended cup-shaped enlargementl5 suitably braced as by a flange 16, said '-'cu pshaped enlargement onits inner side being of substantially conical form except that thesurface is curved "on the arc of a circle, as indicated at 17, when anysection is taken therethrough. I

The roller. B is of cylindrical form with its upper surface extendingabove'the topof the base casting A and at each side thereof,the roller Bis'provided with preferably integral laterally extended trunnions 1818,said trunnio s 18 being also of substantially conical for with theexception that the sur-. faces thereof are also curved, as indicated at19, on radii corresponding to the radius of {curvature of the interiorsurfaces 17 of the bearings provided in the casting A. As

clearly shown in Fig. 2, the trunnions 18 do not fully occupy the spaceprovided therefor in the bearings of the base casting, but onthec'ontrary, clearance is left between the ends of the trunnions andthe opposed end walls of the bearings sufficient to permit the roller Bas an entirety to oscillate or adjust itself about an axis perpendicularto the axis of rotation of the roller B. The upper walls of the hearingsin the base casting are suitably cut away, as indicated at 20, to permitthe roller with its trunnions to be dropped into place, and it will benoted also that the width of the roller is less than they space betweenthe side walls of the base casting so as to permit the oscillatorymovements of the roller B, hereinbefore mentioned.

In operation, it is apparent that the roller B is free to rotate aboutits axis and at the same time should the bearing surface 21 thereaboveassume a" position at an angle to the upper surface of the opposed truckbolster, the pressure on the roller B will automatically cause thelatter to adjust itself in the conical bearings provided therefor aboutan axis perpendicular to thetaxis of rotation of the roller. Byemploying the curved bearing surfaces, hereinbefore described, it isevident that a true surface bearing contact will always be maintainedbe:

manner of carryingrout the invention, the

same is merely illustrative and I contemplate all ,changes andmodifications that come within the scope of the claims appended hereto.

I claim:

1. In a roller bearing, the combination with a retaining and supportingmember, of a roller mounted in said member and having laterally extendedtrunnions, said memher being providedwith bearings; for said trunnions,said trunnions and bearings being both curved lengthwise thereof tothereby permit the roller and said trunnions to oscillate as a unitabout an axis perpendicular to the axis of rotation of the roller.

2. In a roller bearing, the combination with a hollow retaining castinghaving spaced side walls, said side walls being provided with hollowbearings curved lengthwise thereof, of an anti-friction roller havinglaterally extended trunnions, said trunnions being curved lengthwisethereof to correspond with the curvature of said bearings, there beingclearance between'the ends of said trunnions and the ends of saidbearings to thereby permit said trunnions to shift endwise within saidbearings.

3. In a roller bearing, the combination with a. hollow retaining castinghaving I spaced side walls, said side walls being provided with hollowbearings curved lengthwise' thereof, of an anti-friction roller havinglaterally extended trunnions, said trunnlons belng curved lengthwisethereof to correspond with the curvature of said bearings,

therebeing clearance between the ends of said trunnions and the ends ofsaid bearings to thereby permit said trunnions to shift endwise withinsaid bearings, said trunnions being formed integrally with the roller.

In witness that I claim the foregoing I have hereunto subscribed my.name this 7th day of Feb., 1918.

JOHN F. OCONNOR.

